diff options
Diffstat (limited to 'hypervideo_dl/downloader/ism.py')
| -rw-r--r-- | hypervideo_dl/downloader/ism.py | 58 |
1 files changed, 44 insertions, 14 deletions
diff --git a/hypervideo_dl/downloader/ism.py b/hypervideo_dl/downloader/ism.py index 1ca666b..09516ab 100644 --- a/hypervideo_dl/downloader/ism.py +++ b/hypervideo_dl/downloader/ism.py @@ -48,7 +48,7 @@ def write_piff_header(stream, params): language = params.get('language', 'und') height = params.get('height', 0) width = params.get('width', 0) - is_audio = width == 0 and height == 0 + stream_type = params['stream_type'] creation_time = modification_time = int(time.time()) ftyp_payload = b'isml' # major brand @@ -77,7 +77,7 @@ def write_piff_header(stream, params): tkhd_payload += u32.pack(0) * 2 # reserved tkhd_payload += s16.pack(0) # layer tkhd_payload += s16.pack(0) # alternate group - tkhd_payload += s88.pack(1 if is_audio else 0) # volume + tkhd_payload += s88.pack(1 if stream_type == 'audio' else 0) # volume tkhd_payload += u16.pack(0) # reserved tkhd_payload += unity_matrix tkhd_payload += u1616.pack(width) @@ -93,19 +93,34 @@ def write_piff_header(stream, params): mdia_payload = full_box(b'mdhd', 1, 0, mdhd_payload) # Media Header Box hdlr_payload = u32.pack(0) # pre defined - hdlr_payload += b'soun' if is_audio else b'vide' # handler type - hdlr_payload += u32.pack(0) * 3 # reserved - hdlr_payload += (b'Sound' if is_audio else b'Video') + b'Handler\0' # name + if stream_type == 'audio': # handler type + hdlr_payload += b'soun' + hdlr_payload += u32.pack(0) * 3 # reserved + hdlr_payload += b'SoundHandler\0' # name + elif stream_type == 'video': + hdlr_payload += b'vide' + hdlr_payload += u32.pack(0) * 3 # reserved + hdlr_payload += b'VideoHandler\0' # name + elif stream_type == 'text': + hdlr_payload += b'subt' + hdlr_payload += u32.pack(0) * 3 # reserved + hdlr_payload += b'SubtitleHandler\0' # name + else: + assert False mdia_payload += full_box(b'hdlr', 0, 0, hdlr_payload) # Handler Reference Box - if is_audio: + if stream_type == 'audio': smhd_payload = s88.pack(0) # balance smhd_payload += u16.pack(0) # reserved media_header_box = full_box(b'smhd', 0, 0, smhd_payload) # Sound Media Header - else: + elif stream_type == 'video': vmhd_payload = u16.pack(0) # graphics mode vmhd_payload += u16.pack(0) * 3 # opcolor media_header_box = full_box(b'vmhd', 0, 1, vmhd_payload) # Video Media Header + elif stream_type == 'text': + media_header_box = full_box(b'sthd', 0, 0, b'') # Subtitle Media Header + else: + assert False minf_payload = media_header_box dref_payload = u32.pack(1) # entry count @@ -117,7 +132,7 @@ def write_piff_header(stream, params): sample_entry_payload = u8.pack(0) * 6 # reserved sample_entry_payload += u16.pack(1) # data reference index - if is_audio: + if stream_type == 'audio': sample_entry_payload += u32.pack(0) * 2 # reserved sample_entry_payload += u16.pack(params.get('channels', 2)) sample_entry_payload += u16.pack(params.get('bits_per_sample', 16)) @@ -127,7 +142,7 @@ def write_piff_header(stream, params): if fourcc == 'AACL': sample_entry_box = box(b'mp4a', sample_entry_payload) - else: + elif stream_type == 'video': sample_entry_payload += u16.pack(0) # pre defined sample_entry_payload += u16.pack(0) # reserved sample_entry_payload += u32.pack(0) * 3 # pre defined @@ -155,6 +170,18 @@ def write_piff_header(stream, params): avcc_payload += pps sample_entry_payload += box(b'avcC', avcc_payload) # AVC Decoder Configuration Record sample_entry_box = box(b'avc1', sample_entry_payload) # AVC Simple Entry + else: + assert False + elif stream_type == 'text': + if fourcc == 'TTML': + sample_entry_payload += b'http://www.w3.org/ns/ttml\0' # namespace + sample_entry_payload += b'\0' # schema location + sample_entry_payload += b'\0' # auxilary mime types(??) + sample_entry_box = box(b'stpp', sample_entry_payload) + else: + assert False + else: + assert False stsd_payload += sample_entry_box stbl_payload = full_box(b'stsd', 0, 0, stsd_payload) # Sample Description Box @@ -219,12 +246,15 @@ class IsmFD(FragmentFD): 'total_frags': len(segments), } - self._prepare_and_start_frag_download(ctx) + self._prepare_and_start_frag_download(ctx, info_dict) + + extra_state = ctx.setdefault('extra_state', { + 'ism_track_written': False, + }) fragment_retries = self.params.get('fragment_retries', 0) skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True) - track_written = False frag_index = 0 for i, segment in enumerate(segments): frag_index += 1 @@ -236,11 +266,11 @@ class IsmFD(FragmentFD): success, frag_content = self._download_fragment(ctx, segment['url'], info_dict) if not success: return False - if not track_written: + if not extra_state['ism_track_written']: tfhd_data = extract_box_data(frag_content, [b'moof', b'traf', b'tfhd']) info_dict['_download_params']['track_id'] = u32.unpack(tfhd_data[4:8])[0] write_piff_header(ctx['dest_stream'], info_dict['_download_params']) - track_written = True + extra_state['ism_track_written'] = True self._append_fragment(ctx, frag_content) break except compat_urllib_error.HTTPError as err: @@ -254,6 +284,6 @@ class IsmFD(FragmentFD): self.report_error('giving up after %s fragment retries' % fragment_retries) return False - self._finish_frag_download(ctx) + self._finish_frag_download(ctx, info_dict) return True |